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R01UH0336EJ0102 Rev.1.02
Page 1180 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 21 Clocked Serial Interface G (CSIG)
21.3.6
Serial Data Direction Selection
The serial data direction is selectable using the CSIGnDIR bit in the
CSIGnCFG0 register. The examples below show the communication for 8-bit
data (CSIGnCFG0.CSIGnDLS[3:0] = 1000
B
):
Figure 21-8
Serial Data Direction Select Function - MSB First (CSIGnCFG0.CSIGnDIR
= 0)
Figure 21-9
Serial Data Direction Select Function - LSB First (CSIGnCFG0.CSIGnDIR
= 1)
DO7
DO6
DO5
DO4
DO3
DO2
DO1
DI5
DI4
DI3
DI2
DI1
DO0
DI7
DI6
DI0
Read operation from CSIGnRX0
Underfined
Data
Underfined Data
Underfined
Data
Shift register
Data
00H
Data
Data
CSIGnRX0
Shift register
15
8
7
0
15
8
7
0
15
8
7
0
15
8
7
0
CSIGnTSCK
CSIGnTSI
CSIGnTSO
(Write value)
CSIGnTX0W
CSIGnTSO
Write operation from CSIGnTX0W to shift register
CSIGnTSI CSIGnTSO
(Read value)
CSIGnTSI
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
CSIGnTSCK
CSIGnTSI
CSIGnTSO
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
Write operation from CSIGnTX0W
Read operation from CSIGnRX0
CSIGnTX0W
Shift register
CSIGnTSO CSIGnTSI
15
8
7
0
15
8
7
0
15
8
7
0
15
8
7
0
Shift register
CSIGnTSO
CSIGnTSI
Data
Data
Data
CSIGnRX0
00
H
Data
00
H
Data
00
H
Data
(Read value)
(Write value)
Содержание V850 Series
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